- 平計(jì)數(shù)器
- flat counter sink: 平埋頭鉆
- flat counter tube: 平板型正比計(jì)數(shù)管
- flat response counter: 平穩(wěn)反應(yīng)計(jì)數(shù)器
- flat-response counter: 平衡反應(yīng)計(jì)數(shù)器; 平穩(wěn)反應(yīng)計(jì)數(shù)器; 水平響應(yīng)計(jì)數(shù)器
- flat counter sunk nib bolts: 沉頭帶榫螺栓
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